"Good Morning. In retrospect, what happened to me yesterday is insignificant in light of what happened in the Boston. Still, I feel the need to vent. And isn't that what friends are for?" Costello wrote on Facebook Friday. "I was walking down a beautiful, leafy Atlanta street, talking on my iPhone. Guess what happened next? Three teenagers ran up behind me. One of them grabbed my iPhone. Stupidly I struggled to hold on to it. But, he was a big guy. And he pulled out a chunk my hair. I let go. As he ran down the street, laughing, I hurled a few expletives his way."According to the anchor, what she experienced is common. "Turns out, according to ABC news: 'cities across the country are on alert as officials warn of an uptick in stolen Apple products, dubbed 'Apple picking.' So, a warning for you. Do not talk on your iPhone as you walk down the street. Oh, and let go of the stupid device if someone tries to steal it," Costello advised her fans.